HP StorageWorks Modular Smart Array 1000 cs User Manual page 48

Using the CLI
Changing the RAID characteristics of a LUN
While obeying the constraints of included number of drives and applicable stripe
sizes, you can migrate an array from one RAID level to another. If you attempt to
move to an unsupported RAID configuration for an array, an error message is
displayed.
To change the RAID level or the stripe size of a LUN:
Note:
unused space on the array. Migrating from one RAID level to another may require
additional space for parity and organizational purposes.
Basic command
Example command
Command options
Example CLI response
48
Before changing the RAID level or stripe size of a LUN, verify there is available,
MIGRATE UNIT
CLI> MIGRATE UNIT 0 RAID_LEVEL=5 STRIPE_SIZE=32
—the number of the LUN to modify. In this example, LUN 0 will be
UNIT 0
migrated.
—RAID 5 will be assigned to the LUN.
RAID_LEVEL=xxx
RAID levels include:
(no fault tolerance)
0 = RAID 0
(mirroring)
1 = RAID 1
(distributed parity)
5 = RAID 5
Advanced Data Guarding (ADG)
ADG =
—(optional) the stripe size of 32 will be used. Other stripe
STRIPE_SIZE=xxx
size options include:
uses stripe sizes 8, 16, 32, 64, 128, and 256 (Default: 128 KB)
RAID 0
uses stripe sizes 8, 16, 32, 64, 128, and 256 (Default: 128 KB)
RAID 1
uses stripe sizes 8, 16, 32, and 64 (Default: 16KB)
RAID 5
uses stripe sizes 8, 16, 32, and 64 (Default: 16 KB)
RAID ADG
The RAID level of Unit 0 will now be 5.
Unit 0 is being migrated.
Use "show unit 0" to monitor progress.
Modular Smart Array 1000/1500 cs Command Line Interface User Guide